- Safety data sheet
- Saturation humidity (construction)
- Sediment
- Sedimentation
- Seepage water
- Segmental construction
- Self-compacting concrete (SCC)
- Shore hardness
- Shotcrete (mortar / concrete)
- Shrinkage
- Shrinkage mould
- Shut-off piece
- SI prefixes
- SI System / International System of Units
- Silicone micro emulsion
- Silt
- Single inflatable packer
- SIVV Certificate
- Sleeve pipe
- Sliding coupling
- Solvent
- Solvent based epoxy resin
- Spatula
- SPCC
- Spiral Anchor
- Splitting tensile strength / Splitting tensile strength test
- Squeegee / Doctor knife
- Stainless-steel packer
- Standard grade of cleanliness
- Statics
- Stator
- Steel fibre concrete / Steel fibre reinforced conrete
- Steel packer
- Stress
- Strip foundation / Pad foundation
- STUVA
- Subsoil
- Substrate preparation
- Sulphate
- Sulphate formation / ettringite formation (concrete)
- Sump pit
- Surface
- Surface crack
- Surface preparation (corrosion protection steel)
- Surface protection system
- Surface sealing of cracks
- Suspension
- Swelling
